* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  background-color: #ccc;
}
ul {
  list-style: none;
}
li {
  padding: 20px;
  text-align: left;
  font-size: 30px;
  border-bottom: 1px dashed #ccc;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
li input {
  margin-right: 10px;
}
li button {
  display: none;
  padding: 5px;
}
li:hover button {
  display: inline-block;
  cursor: pointer;
}
.finished {
  text-decoration: line-through;
}
h1 {
  margin-bottom: 10px;
}
.box {
  background-color: #fff;
  width: 60vw;
  padding: 20px 20px 0;
  margin: 50px auto;
}
.box .tool input {
  width: 100%;
  height: 50px;
  text-indent: 20px;
  font-size: 20px;
  font-style: italic;
  color: #666;
  font-weight: 700;
}
section {
  height: 50px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
a {
  text-decoration-color: #666;
  color: inherit;
}
